Synthesis and electrochemical properties of LiV3O8 via an improved sol–gel process

摘要: Abstract LiV 3 O 8 cathode material was synthesized via a hydrothermal improved sol–gel process using LiOH, NH 4 VO and oxalic acid as raw materials. The thermal decomposition of the as-prepared precursor investigated by thermogravimetric (TG) differential scanning calorimetry (DSC). structure, morphology electrochemical performance as-synthesized samples were characterized X-ray diffraction (XRD), Fourier transform infrared (FT-IR), electron microscopy (SEM) galvanostatic charge–discharge test. effects synthesis conditions on phases, structure particularly discussed. Result shows that pure sample can be obtained at 300 °C, which is much lower than normal citric assisted method. 350 °C exhibits best performance, present an initial discharge capacity 301.1 mAh/g current density 50 mA/g maintain 271.6 mA/g (about 90.2% its value) after 10 cycles.